I've had the same thing happen with uk.music.folk The last post is from March 14. But I still get rec.music.makers.guitar.acoustic. I haven't troubled my ISP with it, though. They are a small operation and probably have more important things on their plate.

As Abby says, it must have something to do with the traffic on them.

There is always Google groups, I suppose.

Debra Cowan